linux-kernel - Re: [patch] x86, ptrace: in-kernel BTS interface

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Message-Id: <20080430055539.803fa559.akpm@linux-foundation.org>
Date:	Wed, 30 Apr 2008 05:55:39 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	"Metzger, Markus T" <markus.t.metzger@...el.com>
Cc:	<andi-suse@...stfloor.org>, <hpa@...or.com>,
	<linux-kernel@...r.kernel.org>, <mingo@...e.hu>,
	<tglx@...utronix.de>, <markus.t.metzger@...il.com>,
	"Siddha, Suresh B" <suresh.b.siddha@...el.com>,
	<roland@...hat.com>, <mtk.manpages@...il.com>,
	<eranian@...glemail.com>,
	"Villacis, Juan" <juan.villacis@...el.com>
Subject: Re: [patch] x86, ptrace: in-kernel BTS interface

On Wed, 30 Apr 2008 13:43:20 +0100 "Metzger, Markus T" <markus.t.metzger@...el.com> wrote:

> >-----Original Message-----
> >From: Andrew Morton [mailto:akpm@...ux-foundation.org] 
> >Sent: Mittwoch, 30. April 2008 14:27
> >To: Metzger, Markus T
> 
> >> Provide an in-kernel interface to Branch Trace Store and 
> >implement the
> >> ptrace user interface on top of it.
> >> 
> >> Fix a few bugs that were detected during the perfmon2 adaptation to
> >> the DS interface by Stephane Eranian.
> >> 
> >> The ptrace implementation becomes a rather thin layer that only
> >> forwards requests.
> >> 
> >> The BTS interface may later be morphed into a utrace interface for
> >> execution trace, or it may be used to implement such a utrace
> >> interface on top of it.
> >
> >This appears to be against a version of x86-ptrace-pebs-support
> >which I don't have.
> >
> >I dropped everything - let's start again.
> 
> That was against x86.git#latest.

oh, ok.  Hopefully this run-multiple-trees-to-confuse-everyone problem will
go away soon.

> Do you want me to send patches against some other git? Which one?

I'll let you and Ingo sort it out.
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